Black holes have such strong gravity that even light cannot escape from them.

Last weekend some friends of mine and I took a trip to the North-West of Massachussets to see the leaves which have changed their colors. All over the world people talk about the autumn in Boston.For example, there are many regions in the United States in which only few African-Americans live. Somehow intolerance is the biggest there, because the citizens there are not used to foreigners.We went to eat dinner with the Dutch couple in a Sea food restaurant highly recommended in our Lonely Planet Travel Guide Book. It was OK, but we had a great time with our friends.